I have noticed since we started deploying port-security on our Cisco 2960-X switches that the MACs stop showing in UDT for Cisco phones. I have been comparing configs for a couple of days before I removed port-security on one of the switches that stopped working. And what do you know, the phones show up again! Below is our port config with port-security. Is there anything I need to change on this so we can keep port security and have all devices on the port show up in UDT?
interface GigabitEthernet1/0/1
switchport access vlan 3
switchport mode access
switchport nonegotiate
switchport voice vlan 2
switchport port-security maximum 2
switchport port-security
switchport port-security aging time 2
srr-queue bandwidth share 10 10 60 20
srr-queue bandwidth shape 10 0 0 0
mls qos trust device cisco-phone
mls qos trust cos
spanning-tree portfast
spanning-tree guard root